QPSK

基于matlab的fft 适合于初学者，包含程序(matlab fft)

matlab高级讲义，希望对初学者有用。里面有根讲义配套的程序代码(matlab advanced lectures, I hope it will be useful for beginners)

rgb filter for processing images

51全面参考书籍，非常好，有需要的请尽快下载。(51book，download be quick !)

本次实验是要我们先产生心电信号，再加噪声再滤波。由一个心电信号数据表输出心电信号，由于已知的心电信号有噪声，所以我先将信号进行滤波，得到正确的心电信号。再加噪声，通过滤波可以得到高频和中频噪声，将原信号加上噪声显示再滤波。每次的时域信号都画出了他们相应的频谱，便于观察。每次的滤波我也尝试了不同的滤波器。(This experiment is to produce our first ECG, together with noise and then filtering. ECG data from a table output ECG, ECG as a known noise signal is filtered first, I get the correct ECG. Plus noise can be obtained by filtering high-frequency and intermediate frequency noise, the original signal plus noise shown again filtering. Time-domain signals each draw their corresponding spectrum, easy to observe. Every time I try to filter the different filters.)

自己些的Matlab中有关节点重新排序的程序，可以解决网络重构中的首节点与末节点不对应的问题(Own some of the Matlab program to reorder the nodes can solve the network reconfiguration in the first node and end node does not correspond to the problem)

这是一本非常实用的关于自适应滤波器的教材的电子书(This is a very useful textbook on adaptive filter e-book)

matlab 实现fft变化的源代码，这是源代码，不是直接调用函数(matlab source code changes to achieve fft)

this program use for load flow

NFC NDEF Arduino source and example